Hi, Derek,
If you look further down the message board, you will find out quite a lot of info about car hire and recommendations. Both companies recommended will drop off the car at the airport and collect it in Arillas, this would be less hassle if you hired from Arillas car hire. Dimitris has also, posted a message about the taxi fare from the airport to Arillas, so you can compare the costs involved.
You WILL have a another great holiday!!
Eileen